Annual report pursuant to Section 13 and 15(d)

Other (Narrative) (Details)

v3.6.0.2
Other (Narrative) (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Jan. 31, 2016
$ / d
Dec. 31, 2016
contract
Dec. 31, 2015
USD ($)
Operating Leases And Other Property Plant And Equipment [Line Items]      
Operating lease payable amount per day for placing rig on standby | $ / d 15,000    
Rig termination fee as reduced rental payments | $     $ 3,075
Horizontal Drilling Rig [Member]      
Operating Leases And Other Property Plant And Equipment [Line Items]      
Number of contracts | contract   3  
Extended contract expiration terms   The contract terms, as amended through December 31, 2016, of the Cactus 1 Rig and Cactus 2 Rig will end in July 2018 and August 2018, respectively. Effective October 27, 2016, the Company entered into a contract for the Cactus 3 Rig, which commenced drilling in mid-January 2017. The contract terms of the Cactus 3 Rig will end in July 2017.